write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/ata/libata-sata.c
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@@ -317,7 +317,7 @@
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 		 * immediately after resuming.  Delay 200ms before
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 		 * debouncing.
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 		 */
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-		if (!(link->flags & ATA_LFLAG_NO_DB_DELAY))
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+		if (!(link->flags & ATA_LFLAG_NO_DEBOUNCE_DELAY))
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 			ata_msleep(link->ap, 200);
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 		/* is SControl restored correctly? */
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@@ -394,10 +394,23 @@
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 	case ATA_LPM_MED_POWER_WITH_DIPM:
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 	case ATA_LPM_MIN_POWER_WITH_PARTIAL:
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 	case ATA_LPM_MIN_POWER:
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-		if (ata_link_nr_enabled(link) > 0)
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-			/* no restrictions on LPM transitions */
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+		if (ata_link_nr_enabled(link) > 0) {
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+			/* assume no restrictions on LPM transitions */
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 			scontrol &= ~(0x7 << 8);
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-		else {
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+
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+			/*
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+			 * If the controller does not support partial, slumber,
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+			 * or devsleep, then disallow these transitions.
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+			 */
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+			if (link->ap->host->flags & ATA_HOST_NO_PART)
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+				scontrol |= (0x1 << 8);
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+
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+			if (link->ap->host->flags & ATA_HOST_NO_SSC)
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+				scontrol |= (0x2 << 8);
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+
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+			if (link->ap->host->flags & ATA_HOST_NO_DEVSLP)
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+				scontrol |= (0x4 << 8);
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+		} else {
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 			/* empty port, power off */
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 			scontrol &= ~0xf;
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 			scontrol |= (0x1 << 2);